Ceratosoma tenue Bergh, 1874

(Figure 3 I –J)

Material examined. Eight specimens. MB28-004535, ZSC, 14 May 2012, 22 m, 34mm; MB28-004606, 15 Aug. 2012, ZWH, 18m, 62mm; MHN-YT1066, ZWH, 11 Jan. 2014, 17m, 49mm; MHN-YT801, ZM, 13 Jun. 2013, 8m, 22mm; MB28-004738, ZRP, 19 Sep. 2013, 1m, 22mm; MB28-004837, POB, 0 9 May 2014, 18 m, 27mm; ZMBN119699, ZRP, 17 Jul. 2015, 0.5m, 18mm; MB28-004610, ZY, 19 Aug. 2012, 34m, 30mm.

Habitats. Subtropical tidal reefs and rocky reefs.

Occurences: Ponta do Ouro and Zavora.

Geographic distribution. Indo-west, central Pacific. Hawaii (Gosliner et al. 2008), Japan (Baba 1949), Korea, Papua New Guinea, New Caledonia, Australia, Malaysia (Gosliner et al. 2008), Indonesia (Debelius 1996), Tanzania, South Africa and Mozambique (Gosliner et al. 2008).

Remarks. The bathymetric distribution of this species ranged from 1 to 50m. We found two morphotypes: one found in shallow water was smaller and similar to specimens from Tanzania (Rudman 1988) with a bright yellow background and lateral lobes of different sizes (Fig. 3 I); the second morphotype found in deeper water was much larger and predominantly reddish. In this morphotype the anterior lobes are slightly smaller than the posterior lobes (Fig. 3 J). Additional molecular and morphological studies are needed to test the co-specificity of both morphotypes.